Bed-spring frame



UNITED STATES PATENT OFFICE.

BED-SPRIN G FRAME.

Application filed January 18, 1921.

To all whom it may concern:

Be it known that I, HARoLn O. ERSIN, a citizen of the United States, residing at Anoka, in the county of Anoka and State of Minnesota, have invented a new and useful Bed-Spring Frame, of which the following is a specification.

My invention relates to improvements 1n bed spring frames.

Its object is to provide a light, sturdy and inexpensive convertible bed frame adapted for univ rsal use in beds of the three-piece and five piece types.

A further object is to provide a. spring frame of this nature, the adjustable features thereof serving to fit the same to the ends of various beds.

Another object is to provide an adjustable spring frame for beds equipped with novel means for altering the tension of the spring fabric.

With the foregoing and other objects in view, which will appear in the following description, the invention resides in the novel combination and arrangement of parts and in the details of construction hereinafter described and claimed.

The drawings portray an embodiment of my invention. Figure 1 is a perspective view, illustrating one end of a bed spring rail and a riser applied thereto; Fig. 2 is a perspective view of the end of a fabric support designed to be carried upon the riser illustrated in Fig. 1; Fig. 3 is a perspective view in detail of the carriage shown in Fig. 1; Fig. 4 is an end elevation, illustrating that part of my improved spring frame disclosed in Fig. l; 5 is a-detail sectional view taken on the line 5-5 of Fig. i; Fig. 6 is a detail sectional view taken on the line 6-6 of F ig. i; F lgZ'T is a perspective view in detail, illustrating one of the lower riser members employed in my improved spring frame, and Fig. 8 is an elevation, illustrating in detail one of the gripping elements employed in the attaching devices of the lower riser members.

Referring to the drawings, I have used the reference numeral 10 to indicate one of a pair of rails embodied in the present spring frame. A riser A is supplied for each end of each rail 10, the risers at either end of the fame serving to carry fabric supports B. The rails 10 may be of suitable form, preferably tubes, either round or oval in cross section. Mach riser A includes a. lower Specification of Letters Patent.

the margins of the Patented Oct. 18, 1921. Serial No. 438,138.

member A and an upper member A The lower member A has a socket 11 in the inner end thereof in which the end of a rail 10 is pressed, or otherwise secured. The upper face of the lower member A is ribbed longitudinally, as at 12, the outer margin of said surface being depressed, as at 18, to receive a depending flange 14 on the upper riser member A Said lower member A is also formed with an upright lug l5 projecting longitudinally from the outer end thereof, said lug being formed with an inclined slot 16 therein and also with apertures 17 adapted to receive bolts or the like, to be applied to suitable connecting devices required to fit specially formed bed ends. To adapt the lug 15 for use in applying my spring structure to bed ends equipped with ordinary rail boxes, I furnish an adjustable gripping element 0 adapted to fit in the slot 16 in said lug and engage the walls of a rail box socket in such manner as to draw the lower riser member A firmly against the rail box. This gripping member comprises a double headed pin including two members 18 and 19, one threaded within the other to permit the assembling of the pin within the slot and also to permit the lengthening or shortening of said pin to suit various rail sockets. Formed integrally wit-h and upon the upper surface of he lower riser member A is a boss 20, said boss having a threaded bore 21 therein extending transversely with respect to the rail 10. Flanges 22, on the sides of said boss 20, clear the upper ribbed surface 12 of the lower riser member A and are fitted with set screws 23 for purposes soon to appear. The upper riser member A comprises a base 24, standards 25 thereon and a rectangular frame carried at its ends upon said standards. The base 2 1 is formed with a longitudinal slot 26 therein. This slot is slightly greater in width than the length of the boss 20 on the lower riser member A to permit said slot to be placed over the ends of the boss and turned to position shown in Fig. 1, whereby base 24 may be swung into the spaces between the flanges 22 and the ribl ed surface of the lower riser member A The lower surface of the base 24 is ribbed at its ends to correspond with the ribbed surface of the lower riser member A the co-action of said surfaces serving to minimize racking or twisting movements between the riser members A and A when the same are clamped, one against the other,

' ber A by turning the set screws 23 in the boss 20 against the base 24: of the upper riser mem- An adjusting screw 27, journaled at its ends in the standards 25 and supplied with a head 28 for turning the same, is fitted in the threaded bore 21 of the boss 20. A washer 29, interposed between a locking pin 30 in said screw and one of the standards 25, aids in securing the screw against endwise movement in the riser member A Vith the set screws 23 removed from engagement with the base 2a, turned to shift the lower riser member A with respect to the upper riser member A Slight adjustment of this screw 27 suffices to fit the lugs 15 in the riser member A to its respective rail socket. Further adjustment of this screw results in shifting the lower riser member A from one extreme of the upper riser member A to the other. Such adjustment is desired when the spring frame is to be converted from form for use in three-piece beds, as illustrated in Fig. 1, to form for use in five-piece beds wherein the upper riser member is employed as a rest to bear upon the side rails of the bed structure. The rectangular frame at the top of each upper riser member A comprises an outer end 31, an inner end 32, an inner side 33 and an outer side 34, said ends being formed integrally with the standards 25. An upwardly projecting guard 35 on the end 31 overlaps the end of the horizontal flange 36 of a fabric support B. A carriage 0, in the frame at the top of the riser member A consists of a yoke shaped structure, the arms 38 thereof being slidable in slots 39 formed in the outer wall 3a of said frame. These arms 38 are so formed and the slots 39 therefor so designed that upward displacement of said arms is avoided. The body 10 of the yoke has a threaded bore 11 therein designed to receive a screw 42, which is journaled in the side members 33 and 34: of the frame. This screw 12 is supplied, at its inner extremity, with a head 13 for turnmg the same and is also provided, within the inner side member 33, with a stop washer 1% and a lock pin 45 therefor. The turning of this screw 42 shifts the carriage backward and forward upon the upper frame of the riser member A Inside of the outer end 31 of said frame is a dovetailed slide 46 designed to receive a closely fitting notch 47 in the upright flange 50 of a fabric support B; This connection permits the support to 'slideback and forth upon the riser, but at thesame time, prevents tipping movements of said support under tension of the fabric. To supplement this anti-tipping feature, I form openings 18 and 4:9 in the flanges 50 of said fabric supports. The openings 48, at either end of the supports B, snugly receive rounded tips 51 on the extremities of their respective carriage arms 38 while the said screw 27 is openings 19 snugly but revolubly receive the reduced ends 52 of the screw f2.

Assuming that my spring frame structure is to be employed in a three-piece bed, the lower riser members A are adjusted with respect to-the upright riser members A and firmly clamped thereon in positions substantially as shown in Fig. 1. The lugs 15 are then placed in the rail boxes of the bed ends, the gripping members 0 serving to clamp the lower riser members A against said rail boxes, thus forming a rigid structure. In the absence of the ordinary rail boxes upon the bed ends, I contemplate attaching to the lugs 15 suitable projections for cooperation with the special connecting elements on said bed ends. Adjustment of a lower riser member A may be obtained by slightly turning the screw 27 to fit the lug 15 to the rail box therefor, it being necessary to first release the set screws 23 and thereafter reengage the same with the bases 24 of the upper riser member A". Should it be desired to employ the spring frame in connection with a bed of the five-piece type, having end pieces and the usual side rails connecting the same, it is only necessary to shift he lower riser members A to positions beneath the inner extremities of the upper riser members A such adjustment being brought about by manipulation of the adjusting screws 27. The outer ends of the upper riser members A overlap the rails of the bed structure, said risers forming rests adapted to bear upon said rails. In this adjustment of the riser members, the depending flanges 1 1 on the upper members A serve to retain the spring frame against sidewise movements on the bed rails. i r

In the various relations of the riser members, the tension of the spring fabric may be increased or diminished by turning the carriage shifting screws 42 in one direction or the other.

It will be noted that-the present convertible spring frame not only saves the user from abandoning one type of spring frame for another, but minimizes the stock necessary for a dealer to carry which,in turn, reduces the necessary quantity in manufacture. This pronounced saving to the user, dealer and manufacturer accompanies the practical advantages of my spring frame inusel Changes in the specific form of my invencarry a spring fabric, each riser incliding an upper member having a base formed with a longitudinal slot therein, and a lower member fixed upon a rail and designed to rest beneath the base of the upper member, a boss on the lower member having a threaded bore therein and opposed flanges, at the sides thereof, slightly elevated from the upper face of the lower member, the length of the boss being less than the width of the slot in Said base to permit the base to be fitted over the boss and turned to slidably secure said members one with respect to the other, an adjusting screw journaled in the upper riser member, said screw being fitted in the threaded bore of the boss and adapted to shift the riser members into various relations and secure the same therein and supplementary locking means for said riser members comprising set bolts threaded in said flanges and arranged to bear against the base of the upper riser member for clamping said members, one against the other.

2. A spring frame comprising a pair of rails, means on the ends of said rails for applying the same to bed ends. a riser at either end of each rail, said risers being adapted to carry a spring fabric, each riser including an upper member having a base, formed with a longitudinal slot therein, and a lower member fixed upon a rail and designed to rest beneath the base of the upper member, a boss on the lower member having a threaded bore therein and opposed flanges, at the sides thereof, slightly elevated from the upper face of the lower member, the length of the boss being less than the width of the slot in said base to permit the base to be fitted over the boss and turned to slidably secure said members, one with respect to the other, an adjusting screw journaled in the upper riser member, said screw being fitted in the threaded bore of the boss and adapted to shift the riser members into various relations and secure the same therein.

3. A spring frame comprising a pair of rails, means on the ends of said rails for applying the same to bed ends, a riser at either end of each rail, each riser consisting of an upper member and a lower member, the lat; ter being fixed upon a rail and capable or adjustment with respect to the upper member in directions laterally of the spring frame,acarriage on the upper riser member, means for shifting the carriage thereon and fabric supports at either ends of the frame, each end of each support having a sliding connection with an upper riser member and adapted to be shifted longitudinally of the frame structure by said carriage.

'A spring frame comprising a pair of rails, means on the ends of said rails for applying the same to bed ends, a riser at either end of each rail, each riser consisting of an upper member and a. lower member, the latter being fixed upon a rail and capable of adjustment with respect to the upper member in directions laterally of the spring frame, a carriage on the upper riser member, means for shifting the carriage thereon and fabric supports at either end of the frame, each end of each support having an anti-tipping connection with the carriage of an upper riser member and adapted to be shifted longitudinally of the frame structure by said carriage.

5. A spring frame comprising a pair of rails, means on the ends of said rails for applying the same to bed ends, a riser at either end of each rail, said risers being adapted to carry a spring fabric, each riser including two members, one member being attached to a rail and capable of adjustment with respect to the other member in directions laterally of the spring frame to shift its respective rail.

6. A spring frame comprising a pair of rails, means on the ends of said rails for applying the same to bed ends, a riser at either end of each rail, said risers being adapted to carry a spring fabric, each riser including an upper member and a lower member, the latter being fixed upon a rail and capable of movement with respect to the upper member in directions laterally of the spring frame,

djusting means, one element thereof being carried on the upper riser member and the other element on the lower riser member, said means being adapted to shift the lower member with respect to upper member in directions-laterally of the spring frame.

7. spring frame, comprising a pair of rails, a riser either end of each rail, said risers being adapted to carry a spring fabric, ea h riser consisting of an upper member, lower member fixed upon a rail and capal of adjustment with respect to the up ac-r member in directions laterally of the spring frame, and a lug on said lower memer adapted to receive devices for applying the frame structure to the ends of beds.

8. In a device of the class described, a pair of rails, adjustable, self clamping connecting devices at the ends of aid rails for securing the same to bed ends, and riser members on each rail to carry a spring fabric, said rails being severally adjustable laterally with respect to said members.

9. In a device of the class described, a pair of rails, means on said rails for applying the same to bed structure and riser nembers on each rail to carry a sprin fabric, rails being severally adjustab e laterally with respect to said members.

In testimony whereof, I have signed my name to this specification.

HAROLD O. ERSIN. 

